pos/pos_jsprintmanager/views/assets.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
    Copyright (C) 2020-Today: ForgeFlow, S.L. (<https://www.forgeflow.com/>)
    @author: Jordi Ballester Alomar (https://twitter.com/jordibforgeflow)
    License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
-->

<odoo>
    <template id="assets_frontend" inherit_id="point_of_sale.assets">
        <xpath expr="." position="inside">
            <script type="text/javascript" src="/pos_jsprintmanager/static/src/js/jsprintmanager/zip.js"/>
            <script type="text/javascript" src="/pos_jsprintmanager/static/src/js/jsprintmanager/zip-ext.js"/>
            <script type="text/javascript" src="/pos_jsprintmanager/static/src/js/jsprintmanager/deflate.js"/>
            <script type="text/javascript" src="/pos_jsprintmanager/static/src/js/jsprintmanager/JSPrintManager.js"/>
            <script type="text/javascript" src="/pos_jsprintmanager/static/src/js/jsprintmanager/html2canvas.min.js"/>
            <script type="text/javascript" src="/pos_jsprintmanager/static/src/js/jsprintmanager/bluebird.min.js"/>
            <script type="text/javascript" src="/pos_jsprintmanager/static/src/js/screen.js"/>
        </xpath>
    </template>
</odoo>